At a time when most people are clinging to their jobs, there are still a few things that a worker won't stand. Like Satan. Ever since he started his job as a maintenance worker, the "mark of the beast" has been following Walter Slonopas. And when he saw the number "666" printed on his W-2 tax form, reports The Tennessean newspaper, he decided to quit for good.

Slonopas, 52, started working for Contech Casting LLC in Clarksville, Tenn., in April 2011. On his first day, he was supposed to get 668 as his clock-in number, but was given 666 by mistake. As a born-again Christian who believes strongly that triple sixes are Lucifer's mark, Slonopas complained, and its human resources department fixed the error.

A few months later, The Tennessean reports, the company changed its system for clocking in, and Slonopas was once again given 666. He quit, but returned to work a few days later, after the company apologized. And then last week, Slonopas received his W-2 form, numbered 666. According to Bob LaCourciere, vice president of sales at Revstone Corp., which owns Contech Casting, the number simply refers to the order in which the forms were mailed out.

"I am completely at a loss of words," LaCourciere told The Tennessean about the coincidence. It was too much for Slonopas. He quit, apparently for good.

"If you accept that number, you sell your soul to the devil," he told the newspaper.

Federal law requires businesses to make "reasonable accommodations" for the religious beliefs of their employees. And not tagging a worker with the number 666 probably qualifies as reasonable. Contech says that it is trying to accommodate, and planned to send a new form, in the hope of rehiring Slonopas.

But Slonopas believes the message is clear. "God is worth more than money," he said. He has no plans to file a lawsuit.